Spatially Explicit Seagrass Extent Mapping Across the Entire Mediterranean
نویسندگان
چکیده
The seagrass Posidonia oceanica is the main habitat-forming species of coastal Mediterranean, providing millennial-scale ecosystem services including habitat provisioning, biodiversity maintenance, food security, protection, and carbon sequestration. Meadows this endemic represent largest storage among seagrasses around world, largely contributing to global blue stocks. Yet, slow growth temperate extreme projected temperature sea-level rise due climate change increase risk reduction loss these services. Currently, there are knowledge gaps in its basin-wide spatially explicit extent relevant accounting, therefore accurate efficient mapping distribution trajectories needed. Here, we leveraged contemporary advances Earth Observation—cloud computing, open satellite data, machine learning—with field observations through a cloud-native geoprocessing framework account P. across full bioregional scale. Employing 279,186 Sentinel-2 images between 2015 2019, human-labeled training dataset 62,928 pixels, mapped 19,020 km 2 meadows up 25 m depth 22 Mediterranean countries, total seabed area 56,783 . Using 2,480 independent, field-based points, observe an overall accuracy 72%. We include discuss region-specific stocks using our estimate. As reference data collections, remote sensing technology biophysical modelling improve coalesce, such spatial accounts could further support physical monetary accounting condition services, like biodiversity. envisage that effective policy uptake holistic national strategies financing accelerate transparent natural solutions resilience, far beyond location beds.
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ژورنال
عنوان ژورنال: Frontiers in Marine Science
سال: 2022
ISSN: ['2296-7745']
DOI: https://doi.org/10.3389/fmars.2022.871799